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What If the Milky Way Collided With Andromeda?

What If the Milky Way Collided With Andromeda? If you step outside tonight, away from the glow of city lights, and let your eyes adjust to the darkness for twenty minutes or so, you might notice something remarkable in the constellation that shares its name with an ancient princess from Greek mythology. There, hanging in the velvet blackness of space, sits a faint smudge of light. It looks almost like a tiny cloud, perhaps a wisp of cosmic mist that wandered too far from the bright band of the Milky Way stretching overhead. Most people glance right past it without a second thought. But that pale, elongated glow is not a cloud at all. It is the Andromeda Galaxy, and it represents one of the most profound sights available to the unaided human eye. The Milky Way-Andromeda merger lies billions of years in the future, beyond any reasonable horizon of human planning or concern. However, thinking about, learning about, and imagining what it will be like are all activities that enrich our present moment. They expand our sense of what is possible, deepen our appreciation for the universe's grandeur, and remind us that we are part of something far larger than ourselves. As you go about your daily life, remember that the faint smudge of Andromeda is up there in the autumn sky, visible on clear dark nights, slowly but inexorably approaching. Remember that every photon of light from that distant galaxy has travelled for two and a half million years to reach your eye, carrying information about a trillion suns in a cosmic companion we are destined, one way or another, to meet. Remember that the universe is not static but evolving, not finished but still unfolding, not separate from us but the very context of our existence. #astrophysics #milkywaycollision #andromedacollisionwithmilkyway #andromeda #milkyway #cosmology #documentary #science #space #universe #sleepystories